Nanoradiator-Mediated Deterministic Opto-Thermoelectric Manipulation

Liu, Yaoran; Lin, Linhan; Rajeeva, Bharath Bangalore; Jarrett, Jeremy W.; Li, Xintong; Peng, Xiaolei; Kollipara, Pavana Siddhartha; Yao, Kan; Akinwande, Deji; Dunn, Andrew K.; Zheng, Yuebing

doi:10.1021/acsnano.8b05824

Cited by 42 publications

(66 citation statements)

References 55 publications

(77 reference statements)

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“…To turn this drawback into an advantage, new low‐power optical tweezing techniques that capitalize on the photo‐induced heating of plasmonic nanostructures have been devised. [ 110,111 ] Recently, Ndukaife et al have introduced a hybrid electro‐thermo‐plasmonic nanotweezer that exploits the synergistic effects of an externally applied electric field and plasmonic field enhancement of gold nanoantenna, leading to long range trapping of nanoparticles. [ 87,112 ] Most recently, another novel opto‐thermo‐electric trapping technique that exploits plasmonic heating has been developed by Lin et al [ 88 ] By optically heating a thermoplasmonic substrate, a light‐directed thermoelectric field can be generated due to spatial separation of dissolved ions within the heating laser spot, which allows manipulation of nanoparticles of a wide range of materials, sizes and shapes with single‐particle resolution.…”

Section: Optical Trapping In Plasmonic Nanocavitiesmentioning

confidence: 99%

Novel Plasmonic Nanocavities for Optical Trapping‐Assisted Biosensing Applications

Koya

Cunha

Guo

et al. 2020

Advanced Optical Materials

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However, due to the intrinsic low optical response of small objects, there has been a clear trade-off between the size of a material and its response to light. [5] Recently, plasmonic nanostructures have emerged as leading platforms to enhance the weak optical signals of low dimensional materials including quantum dots (QDs), [6] small molecules, [7,8] and 2D monolayers. [9] The plasmonic enhancement of linear and nonlinear optical processes capitalizes on the near-and far-field properties of metallic (e.g., gold and silver) nanostructures. [10] One of the defining features of plasmonic nanostructures is their potential to confine light into deep subwavelength volumes, which has opened a new door to trap and manipulate dielectric, metallic, and biological nano-objects. [11] Moreover, metallic nanostructures are characterized by their capability to amplify the intensity of optical fields by orders of magnitude. The enhancement of local field intensity is attributed to the resonance of plasmon polaritons arising from the coupling of external electromagnetic fields to the collective oscillations of the conduction electrons. [12] A small perturbation (or change in the refractive index) of the near field zone of plasmonic nanostructures leads to significant shift in the plasmon polariton resonance wavelength, which has important implications for surface-enhanced sensing and spectroscopic applications. [13,14] Thus, for the ad-hoc enhancement of optical Plasmonic nanocavities have proved to confine electromagnetic fields into deep subwavelength volumes, implying their potentials for enhanced optical trapping and sensing of nanoparticles. In this review, the fundamentals and performances of various plasmonic nanocavity geometries are explored with specific emphasis on trapping and detection of small molecules and single nanoparticles. These applications capitalize on the local field intensity, which in turn depends on the size of plasmonic nanocavities. Indeed, properly designed structures provide significant local field intensity and deep trapping potential, leading to manipulation of nano-objects with low laser power. The relationship between optical trappinginduced resonance shift and potential energy of plasmonic nanocavity can be analytically expressed in terms of the intercavity field intensity. Within this framework, recent experimental works on trapping and sensing of single nanoparticles and small molecules with plasmonic nanotweezers are discussed. Furthermore, significant consideration is given to conjugation of optical tweezers with Raman spectroscopy, with the aim of developing innovative biosensors. These devices, which take the advantages of plasmonic nanocavities, will be capable of trapping and detecting nanoparticles at the single molecule level.

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Section: Optical Trapping In Plasmonic Nanocavitiesmentioning

confidence: 99%

Novel Plasmonic Nanocavities for Optical Trapping‐Assisted Biosensing Applications

Koya

Cunha

Guo

et al. 2020

Advanced Optical Materials

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“…In the recent years, new applications of optically generated temperature gradients in micron-scale devices have been introduced: first the so-called microscale thermophoresis (MST), which monitors fluorescently labelled biomolecules in a temperature gradient generated by an infrared laser, which is absorbed by water [ 23 , 25 , 40 ]. Secondly, various kinds of thermophoretic traps directing nano objects using the heat dissipated from a focused laser beam have been developed [ 27 , 42 , 44 , 81 ]. Sometimes, a combination of resistive heating and optical heating is used the trap colloidal particles or living cells [ 82 ].…”

Section: How To Generate Temperature Gradientsmentioning

confidence: 99%

“…Measurement principle. Laser interferometry sometimes called thermal imaging uses either quadriwave shearing interferometry (TIQSI) [ 81 , 96 ] or optical digital interferometry (ODI) [ 114 , 115 ] to measure the phase difference, when the refractive index of the solution changes with temperature. The method relies on the temperature derivative of refractive index

to convert a phase change into a temperature change.…”

Section: Temperature Measurementsmentioning

confidence: 99%

Thermophoretic Micron-Scale Devices: Practical Approach and Review

Lee

Wiegand

2020

Entropy

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In recent years, there has been increasing interest in the development of micron-scale devices utilizing thermal gradients to manipulate molecules and colloids, and to measure their thermophoretic properties quantitatively. Various devices have been realized, such as on-chip implements, micro-thermogravitational columns and other micron-scale thermophoretic cells. The advantage of the miniaturized devices lies in the reduced sample volume. Often, a direct observation of particles using various microscopic techniques is possible. On the other hand, the small dimensions lead to some technical problems, such as a precise temperature measurement on small length scale with high spatial resolution. In this review, we will focus on the “state of the art” thermophoretic micron-scale devices, covering various aspects such as generating temperature gradients, temperature measurement, and the analysis of the current micron-scale devices. We want to give researchers an orientation for their development of thermophoretic micron-scale devices for biological, chemical, analytical, and medical applications.

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“…Copyright 2011, SPIE. d) Right: FCC crystal template manufactured from 3 µm diameter silica spheres using HOT and depletion attraction bonding with a second layer of the crystal showing a line defect along one of the in‐plane directions (left). Adapted with permission .…”

Section: Digital Assembly Of Particles With Optical Tweezersmentioning

confidence: 99%

“…Lastly, OTA‐based manufacturing with sub‐100 nm nanoparticles remains challenging. Although the opto‐thermophoretic manipulation of sub‐100 nm colloidal nanoparticles using a low‐power laser beam is possible, depletion attraction cannot provide enough bonding strength for stable assembly because the size of the micellar depletants is not significantly smaller than that of the sub‐100 nm colloidal particles.…”

Section: Opto‐thermophoretic Tweezers For Nanomanufacturingmentioning

confidence: 99%

Digital Assembly of Colloidal Particles for Nanoscale Manufacturing

Kotnala

Zheng

2019

Part & Part Syst Charact

Self Cite

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From unravelling the most fundamental phenomena to enabling applications that impact our everyday lives, the nanoscale world holds great promise for science, technology, and medicine. However, the extent of its practical realization relies on manufacturing at the nanoscale. Among the various nanomanufacturing approaches being investigated, the bottom‐up approach involving assembly of colloidal nanoparticles as building blocks is promising. Compared to a top‐down lithographic approach, particle assembly exhibits advantages such as smaller feature size, finer control of chemical composition, less defects, lower material wastage, and higher scalability. The capability to assemble colloidal particles one by one or “digitally” has been heavily sought as it mimics the natural method of making matter and enables construction of nanomaterials with sophisticated architectures. An insight into the tools and techniques for digital assembly of particles, including their working mechanisms and demonstrated particle assemblies, is provided. Examples of nanomaterials and nanodevices are presented to demonstrate the strength of digital assembly in nanomanufacturing.

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Nanoradiator-Mediated Deterministic Opto-Thermoelectric Manipulation

Cited by 42 publications

References 55 publications

Novel Plasmonic Nanocavities for Optical Trapping‐Assisted Biosensing Applications

Novel Plasmonic Nanocavities for Optical Trapping‐Assisted Biosensing Applications

Thermophoretic Micron-Scale Devices: Practical Approach and Review

Digital Assembly of Colloidal Particles for Nanoscale Manufacturing

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